有時候,在使用LOAD DATA LOCAL INFILE時,文件中列順序或者數量與數據庫表並不相同,這時候需要指定列名。網上很多帖子的寫法是錯誤的,將列名跟在表名之後,會報語法錯誤。
根據語法規則:
load data [low_priority] [local] infile 'file_name txt' [replace | ignore]
into table tbl_name
[fields
[terminated by't']
[OPTIONALLY] enclosed by '']
[escaped by'\' ]]
[lines terminated by'n']
[ignore number lines]
[(col_name, )]
因此正確做法是列名需要放在Fields的後面,例如:
test.txt內容:
a1|a2
b1|b2
c1|c2
d1|d2
e1|e2
mysql中表結構爲:col1 col2 col3
則加載命令爲:
LOAD DATA LOCAL INFILE 'test.txt' INTO TABLE tblTest FIELDS TERMINATED BY '|' (col1, col2);
還可以指定col3:
LOAD DATA LOCAL INFILE 'test.txt' INTO TABLE tblTest FIELDS TERMINATED BY '|' (t1, t2, t3) SET t3='3';